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US4885724A
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Cableless seismic digital field recorder having on-site seismic data processing capabilities
Assignee: BP Corp North America Inc
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Filing: 1988-06-23
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Granted: 1989-12-05
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Expires: 2008-06-23
Abstract
Abstract An improved cableless seismic digital recording system is disclosed which records seismic-trace data generated by any type of seismic source, including high energy impulsive seismic sources, such as dynamite, and low energy surface seismic sources, such as vibrators and hammers. A seismometer, or geophone, is connected to a remotely deployed radio-controlled portable recorder which contains circuitry for sampling, digitizing, processing, storing, and recording seismic-trace data. Coded radio signals instruct each recorder to commence an operation or sequence of operations from a predetermined set of programmed instructions stored in program read only memory included in each recorder. Such operations include seismic-trace data acquisition; optional weighting and vertical stacking (summing); normalization; recording; and seismic source initiation.
Inventors
- 👤 Randol R. Read
- 👤 Ralph E. Warmack
- 👤 James M. Farmer
- 👤 Jerry D. Henshaw
- 👤 Connie T. Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:42
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/24; G01V1/247; G01V1/22; G01V1/223
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
134 words
A portable seismometer group recorder for use in seismic prospecting for processing seismic-trace signals from at least one seismic wave detector comprising: (a) memory means in the recorder for storing a plurality of processing instructions for processing the seismic-trace signals, wherein the processing instructions include: (i) instructions for weighting seismic-trace signals obtained from a plurality of initiations of a seismic source with inverse power weighting exponents selected from the group including 0, 1, 2, and 4; and (ii) instructions for stacking weighted seismic-trace signals; (b) means in the recorder responsive to transmitted coded signals for selecting processing instructions from the plurality of processing instructions stored in the memory means; and (c) means in the recorder for processing the seismic-trace signals from at least one seismic wave detector in accordance with the selected processing instructions.
Claim 2
Dependent Claim
134 words
A portable seismometer group recorder for use in seismic prospecting for processing seismic-trace signals from at least one seismic wave detector comprising: (a) memory means in the recorder for storing a plurality of processing instructions for processing the seismic-trace signals, wherein the processing instructions include: (i) instructions for weighting seismic-trace signals obtained from a plurality of initiations of a seismic source with inverse power weighting exponents selected from the group including 0, 1, 2, and 4; and (ii) instructions for stacking weighted seismic-trace signals; (b) means in the recorder responsive to transmitted coded signals for selecting processing instructions from the plurality of processing instructions stored in the memory means; and (c) means in the recorder for processing the seismic-trace signals from at least one seismic wave detector in accordance with the selected processing instructions.
Claim 3
Dependent Claim
29 words
The recorder of claim 1 further including: means in the recorder responsive to coded signals for activating the recorder by connecting the recorder to a supply of electrical power.
Claim 4
Dependent Claim
19 words
The recorder of claim 1 further including: means in the recorder for digitizing the seismic-trace signals prior to processing.
Claim 5
Dependent Claim
18 words
The recorder of claim 1 wherein the processing instructions further include: instructions for normalizing the processed seismic-trace signal.
Claim 6
Dependent Claim
19 words
The recorder of claim 1 further including: data storage means in the recorder for storing the processed seismic-trace signals.
Claim 7
Dependent Claim
22 words
The recorder of claim 1 further including: recorder if the time between successive initiations of the seismic source reaches a predetermined time.
Claim 8
Dependent Claim
32 words
The recorder of claim 1 further including: means in the recorder responsive to transmitted coded signals for storing header block identification data and recording parameter data with the processed seismic trace signals.
Claim 9
Dependent Claim
22 words
The recorder of claim 7 wherein the header block identification data and recording parameter data include data selected from the group including:
Claim 10
Independent Claim
160 words
A method for seismic prospecting using a portable seismometer group recorder for processing and recording seismic-trace signals from at least one seismic wave detector, comprising the steps of: (a) activating the recorder by connecting the recorder to a supply of electrical power upon receiving first transmitted coded signals; (b) transmitting a second coded signal to the recorder and selecting a set of operating instructions from a plurality of operating instructions stored within the recorder, wherein such operating instructions include: (i) instructions for weighting the seismic-trace signals from a plurality of initiations of a seismic source with inverse power weighting exponents selected from the group including 0, 1, 2, and 4; and (ii) instructions for stacking weighted seismic-trace signals; (c) successively sampling and digitizing the seismic-trace signals in the recorder from at least one sesmic wave detector, thereby forming seismic-trace data; (d) processing the seismic-trace data using the selected processing instructions; and (e) storing the processed seismic-trace data in the recorder.
Claim 11
Independent Claim
160 words
A method for seismic prospecting using a portable seismometer group recorder for processing and recording seismic-trace signals from at least one seismic wave detector, comprising the steps of: (a) activating the recorder by connecting the recorder to a supply of electrical power upon receiving first transmitted coded signals; (b) transmitting a second coded signal to the recorder and selecting a set of operating instructions from a plurality of operating instructions stored within the recorder, wherein such operating instructions include: (i) instructions for weighting the seismic-trace signals from a plurality of initiations of a seismic source with inverse power weighting exponents selected from the group including 0, 1, 2, and 4; and (ii) instructions for stacking weighted seismic-trace signals; (c) successively sampling and digitizing the seismic-trace signals in the recorder from at least one sesmic wave detector, thereby forming seismic-trace data; (d) processing the seismic-trace data using the selected processing instructions; and (e) storing the processed seismic-trace data in the recorder.
Claim 12
Dependent Claim
16 words
The method of claim 9, wherein the operating instructions include: instructions for normalizing processed seismic-trace signals.
Claim 13
Dependent Claim
151 words
A portable seismometer group recorder for use in seismic prospecting for processing seismic-trace signals from at least one seismic wave detector comprising: (a) memory means in the recorder for storing a plurality of processing instructions for processing instructions include: (i) instructions for weighting seismic-trace signals obtained from a plurality of initiations of a seismic source with inverse power weighting exponents selected from the group including 0, 1, 2, and 4; (ii) instructions for stacking weighted seismic-trace signals; and (iii) instructions for storing seismic trace signals from a plurality of initiations of a seismic source without weighting and stacking in the recorder; (b) means in the recorder responsive to transmitted coded signals for selecting processing instructions from the plurality of processing instructions stored in the memory means; and (c) means in the recorder for processing the seismic-trace signals from at least one seismic wave detector in accordance with the selected procesing instructions.
Claim 14
Dependent Claim
151 words
A portable seismometer group recorder for use in seismic prospecting for processing seismic-trace signals from at least one seismic wave detector comprising: (a) memory means in the recorder for storing a plurality of processing instructions for processing instructions include: (i) instructions for weighting seismic-trace signals obtained from a plurality of initiations of a seismic source with inverse power weighting exponents selected from the group including 0, 1, 2, and 4; (ii) instructions for stacking weighted seismic-trace signals; and (iii) instructions for storing seismic trace signals from a plurality of initiations of a seismic source without weighting and stacking in the recorder; (b) means in the recorder responsive to transmitted coded signals for selecting processing instructions from the plurality of processing instructions stored in the memory means; and (c) means in the recorder for processing the seismic-trace signals from at least one seismic wave detector in accordance with the selected procesing instructions.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-12-04 | 1993-06-05 | 1993-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-04 | 1997-06-05 | 1997-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-04 | 2001-06-05 | 2001-12-05 | $7700.00 | Window Closed / Lapsed |